Finding the Fourth Proportional to 129,749,122.28, 179,054,263.08 and 70,210,418.70
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Solution
The fourth proportional to 129,749,122.28, 179,054,263.08 and 70,210,418.70 is: 96,890,634.48
Step by Step Solution
- Step 1: Write the proportion equation
129,749,122.28 : 179,054,263.08 = 70,210,418.70 : x - Step 2: Convert to fraction form
129,749,122.28/179,054,263.08 = 70,210,418.70/x - Step 3: Cross multiply
129,749,122.28x = 179,054,263.08 × 70,210,418.70 - Step 4: Simplify right side
129,749,122.28x = 12,571,474,780,866,754 - Step 5: Solve for x
x = 12,571,474,780,866,754/129,749,122.28 - Step 6: Final answer
x = 96,890,634.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.